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io_uring: fix memory leak of uid in files registration

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When there are no files for __io_sqe_files_scm() to process in the
range, it'll free everything and return. However, it forgets to put uid.

Fixes: 08a451739a9b5 ("io_uring: allow sparse fixed file sets")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/accee442376f33ce8aaebb099d04967533efde92.1648226048.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2022-03-25 16:36:31 +00:00 committed by Jens Axboe
parent 8197b053a8
commit c86d18f4aa
1 changed files with 1 additions and 0 deletions
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fs/io_uring.c
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@ -8845,6 +8845,7 @@ static int __io_sqe_files_scm(struct io_ring_ctx *ctx, int nr, int offset)
fput(fpl->fp[i]); fput(fpl->fp[i]);
} else { } else {
kfree_skb(skb); kfree_skb(skb);
free_uid(fpl->user);
kfree(fpl); kfree(fpl);
} }